Rolling mill



M. MORGAN ROLLING MILL March 6, 1945.

MLEs MOEGAN Filed Dec. 2, 1945 mm-Sr orrica I.

ROLLING Myles Morgan, Worcester, I Masa, assigncr to Morgan Construction.Company, Worcester,

Mass, a corporation of Massachusetts Application December 2, 1943,Serial No. 512,583

chant bars.

Merchant mills ordinarily include a plurality of roll stands or passesthrough which the stock travels successively, some of these stands beingjuxtaposed for continuous operation and others being arranged. to formopen passes through which the stock runs freely without tension. Betweencertain of the roll stands it is a common practice to provide Y-transferconveying mechanisms of well-known construction, each of thesemechanisms serving to receive the stock from.

one roll stand, to reverse the direction of travel of the stock, and todeliver it to a following roll stand. The path along which the stock isdellvered by such a Y-transfer mechanism lies at an acute angle with thepath along which the stock is received. Each roll stand is provided witha receiving guide and a delivery guide located close to the rolls and onopposite sides thereof to direct the stock through the rolls in a pathat right angles with the roll axes. However, with merchant mills asheretofore constructed, the stock has been compelled to leave thedelivery guide and enter the Y-transfer mechanism along a path divergingangularly from its path through the rolls. This has caused a lateralpressure against the guide, resulting in rapid wear of the guide andscratching of the stock. Upon leaving the last roll stand the stock isdelivered to a-cooling bed, and with certain prior mill constructions ithas been found necessary to extend the Y-transfer mechanism underneaththe cooling bed in order to avoid interference therewith. This isundesirable from the viewpoint of accessibility and for various otherreasons.

It is accordingly one object of the invention to provide a rolling millhaving roll stands connected by a Y-transfer conveying mechanism soconstructed and arranged as to avoid lateral pressure against theguides.

It is a further object of the invention to provide a rolling mill havingroll stands and associated Y-transfer conveying mechanism so constructedand arranged that in approaching and leaving each roll stand the stockwill travel in a straight line at rightangles with the roll axes.

It is a further object. of the invention to provide a rolling millhaving roll stands, a Y-transfer conveying mechanism and a cooling bedin a compact and efllclent arrangement such that interference betweenthe cooling "bed and the said Y-transfer conveyingmechanism is avoided.With these and other objects in view, as will be apparent to thoseskilled in the art, the in vention resides in the combinationoi partsset forth in the specification and covered by the claims appendedhereto.

Referring to the drawing illustrating one embodiment of. the inventionand in which like refence numerals indicate like parts, the singlefigure is a somewhat diagrammatic plan view of a rolling mill.

The embodiment illustrated comprises a roughing mill l0 to which heatedbars or billets are delivered by a roller-table ll, as indicated by thearrow A. This particular mill has eight stands of horizontal rolls,juxtaposed for continuous operation. The first four or these roll standsare driven in groups of two by two variable speed electric motors l2,while each of the remaining stands is driven by a separate variablespeed electric motor 14. Upon leaving the roughing mill II) the stock isreceived by a Y- transfer conveying mechanism I5 of any suitable andwell-known construction, the mechanism illustrated being provided withthe usual skewed reversible power-driven rollers It. This Y- transiermechanism is constructed. and arranged to receive the stock. along aline of travel indicated by the arrow- B and to deliver the stock in thereverse direction along a line of travel indicated by the arrow C, theselines being positioned at an acute angle to one another. The Y-transferl5 serves to deliver the stock directly to a single horizontal rollstand l8 driven by a variable speed electric motor l9 and forming a freeor open pass for the stock. Upon leaving the roll stand [8 the stock isreceived by a second Y-transfer conveying mechanism 20 similar to themechanism l5 and having the usual skewed reversible power-driven rollers2|. This Y -transfer mechanism 20 is constructed and arranged to receivethe stock along a line of travel indicated by the arrow D and to deliverthe stock in the reverse direction along a line of travel indicated bythe arrow E, these lines being positioned at an acute angle to oneanother. The Y-transfer 20 serves to deliver the stock directly to asingle horizontal roll stand 23 driven by a variable speed electricmotor 24 and forming a second free or open pass for the stock. Uponleaving the roll stand 23 the stock is received by a roller table orrun-out 25 which delivers the stock along the line indicated by thearrow F to a suitable cooling bed 2'! located between the cooling bed21.

table 25 and the Y-transfer E5. The stock travels broadside across thecooling bed 21, as indicated by the arrows G, to a roller table 28 alonwhich it travels longitudinally, as indicated by the arrow H.

It will now be noted that the arrows A and B are directly aligned withthe pass line of the mill l0, and thus define a. single line at rightangles with the rolls of the said mill. The arrows C and D are directlyaligned with the pass line of the roll stand "3, the roll axes beingpositioned at right angles with the common line indicated by thesearrows. The arrows E and F are directly aligned with the pass line ofthe roll stand 23, and thus define. a single line at right angles withthe rolls of the said stand. Furthermore the line iii-F is parallel withthe line AB, the angle between the arrows B and C being equal to theangle between the arrows D and E. V

In the operation of the invention the stock will travel in a directstraight line A-B through the roughing mill l0, then after beingreversed by the Y-transfer l5 itwill travel in a direct straight line0-D through the roll stand l8. The direction of travel will again bereversed by the Y-transfer 20, which will deliver the stock for travelthrough the roll stand 23 in a direct straight line EF to the rollertable 25 and the The stock thus follows a z-shaped path through themill. There is no lateral bending of the stock at any of the roll standsand hence no. lateral pressure on the guides. Consequently the life ofthe guides will be prolonged and scratching of the stock will beminimized. By reason of the straight run out of the stock i'r'om theroughing mill Ill,

sufficient space is obtained for the cooling bed 2'! withoutinterference with the Y-transfer l5.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent is:

1. A rolling mill comprising a Y-transf er conveying mechanism arrangedto receive bars of stock along one line of travel and to deliver thebars along a line at an acute angle with the receiving line, and aseparate stand of horizontal rolls to reduce the bars as they travelalong each of said lines, the r0118 being positioned at right angleswith the corresponding lines of travel.

2. A rolling mill comprising two Y-transier, conveying mechanisms eacharranged to receive bars of stock along one line of travel and todeliver the bars along a line at an acute angle with the said receivingline, the receiving line of the second mechanism being in a common linewith the delivery line of the first mechanism, and a stand of horizontalrolls arranged to reduce the bars as they travel from the firstmechanism to the second mechanism, the rolls being at right angles withthe said common line.

3. A rolling mill comprising conveying mechanism arranged to move barsof stock longitudinally and successively along three straight linesforming a substantially Z-shaped path, and a separate stand-ofhorizontal rolls to reduce the bars as they travel along each of saidlines, the rolls being positioned at right angles with the correspondinglines of travel.

l 4.- A rolling mill comprising conveying mechanism arranged to movebars of stock longitudinally and successively along three straight linesforming a substantially Z-shaped path, the first and third of said linesbeing parallel, and a separate stand of horizontal rolls to reduce thebars as they travel along each of said lines, the rolls being positionedat right angles with the corresponding lines, of travel.

5. A rolling mill comprising two Y-transter conveying mechanisms eacharranged to receive bars of stock along one line of travel and todeliver the bars along a, line at an acute angle with the said receivingline, the receiving line of the second mechanism being in a common linewith the delivery line of the first mechanism, a stand of horizontalrolls to reduce the bars as they approach the first mechanism with therolls at right angles with the receiving line of the first mechanism, astand of horizontal rolls to reduce the bars as they travel from thefirst mechanism to the second mechanism with the rolls at right angleswith the said common line, and a stand of horizontal rolls to reduce thebars as they leave the second mechanism with the rolls at right angleswith the delivery line or the second mechanism.

- 6. A rolling mill comprising two Y-transter conveying mechanismsarranged to move bars of stock longitudinally and successively alongthree straight lines forming a substantially Z-shaped path, separatestands of horizontal rolls to reduce the bars as they approach the firstmechanism, as they travel from the first mechanism to the secondmechanism, and as they leave the second mechanism, the rolls of eachstand being positioned at right angles with the corresponding line oftravel, a run-out to receive the bars as they-leave the last stand ofrolls, and a cooling bed to receive the bars broadside from the run-outand located between the run-out and the first mechanism. I

MYLES MORGAN.

